Duplicate costumes are frustrating. Events are irregular and they take effort to get the rare costumes. To get to the end hoping for a new wizzbang LP costume and picking up two duplicates instead was a big letdown (I got gold and 100 gems instead). Surely it's not that difficult to insert a little code to generate a random costume from a list of ones that a player doesn't already have within each category, and only generate a resource replacement if there are none left.
